Issues recording guitar w/ an SM57 and mbox2

Hi, I am pretty new recording and just recently got an mbox2 le setup with a macbook pro. I'm getting horrible sounds recording my vox halfstack with an sm57 (the only mic i have.) I hope I am able to get something decent with that setup and hope that my problem is coming from my (at best) basic knowledge of mic placement, but I am wondering if the preamps on the mbox2 are capable of decent sounds? This is the first thing I ever recorded (really not satisfied with it at all) http://www.myspace.com/ckco. Anyone who listens can hear how awful the guitars sound and I am hoping anyone can give me suggestions to improve the sound of my guitar recordings either by buying a better preamp or giving me suggestions about better mic placement. I recorded this about 6-8 inches away not directly facing the speaker but 30 degrees tilted pointed towards the side of the speaker. The volume coming out of my amp was low considering my amps capabilities, but I couldnt go too much louder because I live in a dorm. Still, I was getting a good signal in Protools. The sound im getting is very unnatural. Any help would be much appreciated!!

U dont really need to turn up that amp up much to get a nice sound. Maybe u need to work on the EQ of the guitar on the amp a bit and compare recordings. That tone tho sound pretty interesting. The guitar work is coming along nicely, if this is your first recording! Try a 45 degree angle and see what that sounds like then mess w/ the amp to adjust to that recorded sound. Even bring the mic out a foot or two and try to change recording's EQ by using trial and error mic placement.
PEACE :-?

U dont really need to turn up that amp up much to get a nice sound. Maybe u need to work on the EQ of the guitar on the amp a bit and compare recordings. That tone tho sound pretty interesting. The guitar work is coming along nicely, if this is your first recording! Try a 45 degree angle and see what that sounds like then mess w/ the amp to adjust to that recorded sound. Even bring the mic out a foot or two and try to change recording's EQ by using trial and error mic placement.
PEACE :-?